@article {2994, title = {14C Blank Corrections for 25{\textendash}100 μg Samples at the National Ocean Sciences AMS Laboratory}, journal = {Radiocarbon}, volume = {61}, year = {2019}, month = {10/2019}, pages = {1403 - 1411}, abstract = {Replicate radiocarbon (14C) measurements of organic and inorganic control samples, with known Fraction Modern values in the range Fm = 0{\textendash}1.5 and mass range 6 μg{\textendash}2 mg carbon, are used to determine both the mass and radiocarbon content of the blank carbon introduced during sample processing and measurement in our laboratory. These data are used to model, separately for organic and inorganic samples, the blank contribution and subsequently {\textquotedblleft}blank correct{\textquotedblright} measured unknowns in the mass range 25{\textendash}100 μg. Data, formulas, and an assessment of the precision and accuracy of the blank correction are presented.}, keywords = {AMS, AMS dating, blank corrections}, isbn = {0033-8222, 1945-5755}, doi = {10.1017/RDC.2019.74}, url = {https://www.cambridge.org/core/journals/radiocarbon/article/14c-blank-corrections-for-25100-g-samples-at-the-national-ocean-sciences-ams-laboratory/494B9CF72445198570213B4A2CC303D0}, author = {Roberts, M. L. and Elder, K. L. and Jenkins, W. J. and Gagnon, A. R. and Xu, L. and Hlavenka, J. D. and Longworth, B. E.} } @article {246, title = {A High-Performance (14)c Accelerator Mass Spectrometry System}, journal = {Radiocarbon}, volume = {52}, year = {2010}, note = {id: 2095; PT: J; CT: 20th International Radiocarbon Conference; CY: MAY 31-JUN 05, 2009; CL: Big Isl, HI; SI: 1; UT: WOS:000285437800005}, pages = {228-235}, abstract = {A new and unique radiocarbon accelerator mass spectrometry (AMS) facility has been constructed at the Woods Hole Oceanographic Institution. The defining characteristic of the new system is its large-gap optical elements that provide a larger-than-standard beam acceptance. Such a system is ideally suited for high-throughput, high-precision measurements of (14)C. Details and performance of the new system are presented.}, issn = {0033-8222}, doi = {10.2458/azu_js_rc.52.3657}, author = {Roberts, M. L. and Burton, J. R. and Elder, K. L. and Longworth, B. E. and McIntyre, C. P. and von Reden, K. F. and Han, B. X. and Rosenheim, B. E. and W. J. Jenkins and Galutschek, E. and McNichol, A. P.} } @article {1835, title = {The Passage of the Bomb Radiocarbon Pulse into the Pacific Ocean}, journal = {Radiocarbon}, volume = {52}, year = {2010}, note = {Sp. Iss. 2696jo Times Cited:7 Cited References Count:38 }, month = {2010}, pages = {1182-1190}, abstract = {We report and compare radiocarbon observations made on 2 meridional oceanographic sections along 150 degrees W in the South Pacific in 1991 and 2005. The distributions reflect the progressive penetration of nuclear weapons-produced (14)C into the oceanic thermocline. The changes over the 14 yr between occupations are demonstrably large relative to any possible drift in our analytical standardization. The computed difference field based on the gridded data in the upper 1600 m of the section exhibits a significant decrease over time (approaching 40 to 50 parts per thousand in Delta(14)C) in the upper 200-300 m, consistent with the decadal post-bomb decline in atmospheric (14)C levels. A strong positive anomaly (increase with time), centered on the low salinity core of the Antarctic Intermediate Water (AAIW), approaches 50-60 parts per thousand in Delta(14)C, a clear signature of the downstream evolution of the (14)C transient in this water mass. We use this observation to estimate the transit time of AAIW from its "source region" in the southeast South Pacific and to compute the effective reservoir age of this water mass. The 2 sections show small but significant changes in the abyssal (14)C distributions. Between 1991 and 2005, Delta(14)C has increased by 9 parts per thousand below 2000 m north of 55 degrees S. This change is accompanied overall by a modest increase in salinity and dissolved oxygen, as well as a slight decrease in dissolved silica. Such changes are indicative of greater ventilation. Calculation of "phosphate star" also indicates that this may be due to a shift from the Southern Ocean toward North Atlantic Deep Water as the ventilation source of the abyssal South Pacific.}, keywords = {AMS, antarctic intermediate water, anthropogenic co2, atlantic, c-14 data, carbon, distributions, graphite, south-pacific, tritium}, isbn = {0033-8222}, author = {Jenkins, W. J. and Elder, K. L. and McNichol, A. P. and von Reden, K.} } @article {966, title = {WOCE radiocarbon IV: Pacific Ocean results; P10, P13N, P14C, P18, P19 \& S4P}, journal = {Radiocarbon}, volume = {44}, year = {2002}, note = {591keTimes Cited:33Cited References Count:56}, pages = {239-392}, abstract = {The World Ocean Circulation Experiment, carried out between 1990 and 1997, provided the most comprehensive oceanic survey of radiocarbon to date. Approximately 10,000 samples were collected in the Pacific Ocean by U.S. investigators for both conventional large volume P counting and small volume accelerator mass spectrometry analysis techniques. Results from six cruises are presented. The data quality is as good or better than previous large-scale surveys. The C-14 distribution for the entire WOCE Pacific data set is graphically described using mean vertical profiles and sections, and property-property plots.}, issn = {0033-8222}, url = {https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/4097}, author = {Key, R. M. and Quay, P. D. and Schlosser, P. and McNichol, A. P. and von Reden, K. F. and Schneider, R. J. and Elder, K. L. and Stuiver, M. and Ostlund, H. G.} } @article {2188, title = {Oceanic uptake of CO2 re-estimated through d13C in WOCE samples}, journal = {Nuclear Instruments and Methods in Physics Research}, volume = {B (172)}, year = {2000}, note = {id: 1817}, month = {2000}, pages = {501-512}, author = {Lerperger, M. and McNichol, A. P. and Peden, J. and Gagnon, A. R. and Elder, K. L. and Kutschera, W. and Rom, W. and Steier, P.} } @conference {1767, title = {The radiocarbon gradient at the Antarctic Polar Front}, booktitle = {AGU Ocean Sciences Meeting}, year = {2000}, note = {id: 317}, month = {2000}, address = {San Antonio, TX}, author = {Schneider, R. J. and McNichol, A. P. and von Reden, K. F. and Elder, K. L. and Gagnon, A. R. and Key, R. M. and Quay, P. D. and Schlosser, P. M.} } @conference {1804, title = {Ten years after - the WOCE AMS radiocarbon program}, booktitle = {Accelerator Mass Spectrometer Conference}, year = {2000}, note = {id: 316}, month = {2000}, author = {McNichol, A. P. and Schneider, R. J. and von Reden, K. F. and Gagnon, A. R. and Elder, K. L. and Key, R. M. and Quay, P. D.} } @article {810, title = {Ten years after - The WOCE AMS radiocarbon program}, journal = {Nuclear Instruments \& Methods in Physics Research Section B-Beam Interactions with Materials and Atoms}, volume = {172}, year = {2000}, note = {372jrTimes Cited:14Cited References Count:12}, month = {Oct}, pages = {479-484}, abstract = {The National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) Facility is measuring all of the samples collected as part of the US WOCE Program - over 13,000 samples. We designed our extraction lines so that we also measure precise, oceanographically useful delta C-13-Sigma CO2 values. We have completed the analysis of samples from the Pacific and Southern Oceans and are processing those from the Indian Ocean now. At present, this constitutes the world{\textquoteright}s largest AMS data set. Reviews of the Pacific radiocarbon data are available and demonstrate the increased penetration of the "bomb signal" into the water column since the 1970s. Stable isotope data are being combined with those collected as part of NOAA{\textquoteright}s Ocean-Atmosphere Carbon Exchange Study to study the ocean{\textquoteright}s role in the anthropogenic CO2 cycle. The relationship of delta C-13 to other chemical tracers, e.g., PO4, O-2 and chlorofluorocarbons, will further our understanding of basic oceanographic processes. We present preliminary results from these studies as well as investigate the relationship of C-14 to C-13 in the ocean. (C) 2000 Elsevier Science B.V. All rights reserved.}, issn = {0168-583x}, doi = {10.1016/S0168-583x(00)00093-8}, author = {McNichol, A. P. and Schneider, R. J. and von Reden, K. F. and Gagnon, A. R. and Elder, K. L. and Key, R. M. and Quay, P. D.} } @article {2435, title = {Evaluating reproducibility of seawater, inorganic and organic carbon 14C results at the National Ocean Sciences AMS Facility (NOSAMS)}, journal = {Radiocarbon}, volume = {40}, year = {1998}, month = {1998}, pages = {223-230}, author = {Elder, K. L. and McNichol, A. P.
 and Gagnon, A. R.} } @conference {1646, title = {High-precision Measurements of 14C as a Circulation Tracer in the Pacific, Indian, and Southern Oceans with Accelerator Mass Spectrometry (AMS)}, booktitle = {8th International Conference on Heavy Ion Accelerator Technology}, year = {1998}, note = {id: 1636}, month = {1998}, address = {Argonne National Lab}, author = {von Reden, K. F. and Peden, J. C. and Schneider, R. J. and Bellino, M. and Donoghue, J. and Elder, K. L. and Gagnon, A. R. and Long, P. and McNichol, A. P. and Morin, T. and Stuart, D. and Hayes, J. M. and Key, R. M.}, editor = {Shepard, K. American Institute of Physics} } @conference {1778, title = {Reproducibility of seawater, inorganic and organic 14C results at NOSAMS}, booktitle = {Sixteenth International 14C Conference}, volume = {40(1)}, year = {1998}, note = {id: 1625}, month = {1998}, pages = {223-230}, address = {Groningen}, author = {Elder, K. L. and McNichol, A. P. and Gagnon, A. R.} } @article {2276, title = {Status Report of the National Ocean Sciences AMS Facility at Woods Hole Oceanographic Institution: Operations and Recent Developments}, journal = {15th International Conference on the Applications of Accelerators in Research and Industry}, volume = {A.I.P. Conference Proceedings}, year = {1998}, note = {id: 1647}, month = {1998}, pages = {644-647}, author = {Bellino, M. and von Reden, K. F. and Schneider, R. J. and Peden, J. C. and Donoghue, J. and Elder, K. L. and Gagnon, A. R. and Long, P. and McNichol, A. P. and Odegaard, A. P. and Stuart, D. and Handwork, S. and Hayes, J. M.} } @conference {1560, title = {AMS measurements of the 14C distribution in the Pacific Ocean}, booktitle = {Proceedings of the Seventh International Conference on Accelerator Mass Spectrometry}, volume = {B123}, year = {1997}, note = {id: 1644; B123}, month = {1997}, pages = {438-442}, address = {Tucson, AZ}, author = {von Reden, K. F. and McNichol, A. P. and Peden, J. C. and Elder, K. L. and Gagnon, A. R. and Schneider, R. J.}, editor = {Jull, A. J. T.} } @article {2280, title = {AMS measurements of the 14C distribution in the Pacific Ocean}, journal = {Nuclear Instruments and Methods in Physics Research}, volume = {B123}, year = {1997}, note = {id: 1673}, month = {1997}, pages = {438-442}, author = {von Reden, K. F. and McNichol, A. P. and Peden, J. C. and Elder, K. L. and Gagnon, A. R. and Schneider, R. J.} } @conference {1630, title = {Evaluating reproducibility of seawater, inorganic and organic carbon 14C results at the National Ocean Sciences AMS Facility (NOSAMS)}, booktitle = {16th International Radiocarbon Conference}, series = {Book of Abstracts}, year = {1997}, note = {id: 956}, month = {1997}, pages = {45}, address = {Groningen}, author = {Elder, K. L. and McNichol, A. P. and Gagnon, A. R.} } @conference {1777, title = {Reproducibility of 14C AMS analyses at NOSAMS}, booktitle = {16th International Radiocarbon Conference}, year = {1997}, note = {id: 961}, month = {1997}, pages = {45}, publisher = {Book of Abstracts}, organization = {Book of Abstracts}, address = {Groningen}, author = {Elder, K. L. and Gagnon, A. R. and McNichol, A. P.} } @article {2335, title = {Distribution of otoliths in surficial sediments of the U. S. Atlantic continental shelf and slope and potential for reconstructing Holocene fish stocks}, journal = {Paleoceanography}, volume = {11}, year = {1996}, note = {id: 1755}, month = {1996}, pages = {359-367}, author = {Elder, K. L. and Jones, G. A. and Bolz, G.} } @article {942, title = {AMS C14 Dating of the Holocene Climatic Optimum in the North Pacific and Atlantic Oceans}, journal = {EOS,Transactions,American Geophysical Union}, volume = {75}, year = {1994}, note = {id: 913}, pages = {199}, author = {Kuzmin, Y. V. and Jones, G. A. and Elder, K. L.} } @article {844, title = {Methods for Data Screening, Flagging and Error Analysis at the National-Ocean-Sciences-Ams-Facility}, journal = {Nuclear Instruments \& Methods in Physics Research Section B-Beam Interactions with Materials and Atoms}, volume = {92}, year = {1994}, note = {Nv547Times Cited:14Cited References Count:4}, month = {Jun}, pages = {172-175}, abstract = {All data collection, from sample submittal through processing into targets and AMS analysis, is integrated within a large relational database (Sybase). Over 50 tables are linked through key fields. Through structured queries, the information is analysed and presented for a wide variety of applications. Benefits include enhanced quality control, more complete reports to users and more accurate transfer of data among the several laboratories on the network.}, issn = {0168-583x}, doi = {10.1016/0168-583x(94)96000-3}, author = {Schneider, R. J. and Jones, G. A. and McNichol, A. P. and vonReden, K. F. and Elder, K. L. and Huang, K. and Kessel, E. D.} } @article {1365, title = {Dating the Climatic Optimum with AMS}, volume = {Spring 1993}, year = {1993}, note = {id: 1645}, month = {1993}, author = {Elder, K. L.} } @conference {1690, title = {Methods for data screening, flagging and error analysis at the National Ocean Sciences AMS Facility}, booktitle = {6th International Conference on Accelerator Mass Spectrometry}, year = {1993}, note = {id: 933}, month = {1993}, pages = {83}, address = {Canberra, Australia}, author = {Schneider, R. J. and Jones, G. A. and McNichol, A. P. and von Reden, K. F. and Elder, K. L. and Kessel, E. D.} } @conference {1700, title = {The National Ocean Sciences AMS Facility at Woods Hole Oceanographic Institution}, booktitle = {6th International Conference on Accelerator Mass Spectrometry}, year = {1993}, note = {id: 930}, month = {1993}, pages = {46}, address = {Canberra, Australia}, author = {Jones, G. A. and Schneider, R. J. and von Reden, K. F. and McNichol, A. P. and Gagnon, A. R. and Cohen, G. J. and Osborne, E. A. and Hutton, D. L. and Kessel, E. D. and Elder, K. L.} } @article {2404, title = {The occurrence of extralimital boreal mollusks in West Greenland during the Holocene (abstract)}, journal = {EOS, Transactions, American Geophysical Union}, volume = {72}, year = {1992}, note = {id: 1758}, month = {1992}, author = {Jones, G. A. and Elder, K. L.} } @article {2408, title = {Response of G. quinqueloba to Hypsithermal warming in the Norwegian-Greenland Sea (abstract)}, journal = {EOS, Transactions, American Geophysical Union}, volume = {71}, year = {1991}, note = {id: 1759}, month = {1991}, author = {Jones, G. A. and Elder, K. L.} } @conference {1779, title = {Response of the Norwegian-Greenland Sea to Mid-Holocen warming (abstract)}, booktitle = {20th Arctic Workshoip, INSTAAR}, year = {1991}, note = {id: 1760}, month = {1991}, address = {Fairbanks, AL}, author = {Jones, G. A. and Elder, K. L.} }